Brainstorm About Computer Networks Take 3-4 minutes to write –Include your name (I’ll collect and read, but not grade) What are some network applications? What are some network protocols? What do users care about for good network performance? Trade write-ups with another student (introduce yourselves!) What do we have?

CS 3516 Computer Networks Mark Claypool

Outline Background Course Materials Topics Motivation

Professor Background (Who am I?) Dr. Mark Claypool (“professor”, “Mark”) –Computer Science Operating Systems, Distributed Computer Systems, Multimedia, Networks –Director of the IMGD program The Game Development Process, Technical Game Development II Research interests –Networks, Multimedia, Network games, Performance evaluation

Teaching Assistants Background (Who are they?) Choong-Soo Lee –Ph.D. student –“CHAP - Credit-based Home Access Point for Overall Application QoS Improvement” Thangam Vedagiri Seenivasan –M.S. student –“CStream: Neighborhood Bandwidth Aggregation for Better Video Streaming” Both are excellent resources for help! –See them early! –See them often!

Student Background (Who Are You?) Year –sophomore, junior, … Major –CS, IMGD, RBE, ECE, … Programming Language of choice –Java, C++, Python, … Programmer: –(noob) 1 to 5 (guru/hacker) Network application written? Sockets? Other …

Syllabus Stuff Office hours: –TBA (about 3 per week each) –See Web page –{claypool, clee01, cs.wpi.edu cs.wpi.edu –cs3516-all cs.wpi.edu

Course Materials Slides –On the Web –PPTX and PDF –Caution! Don’t rely upon the slides alone! Use them as supplementary material (come to class) Timeline –Tentative planning Assignments Samples –Network code, links

Text Book Computer Networking - A Top-Down Approach –James F. Kurose and Keith W. Ross 5th edition! Copyright Pearson, 2010 Unique in the presentation of networks from the user (top) down to the bottom (physical medium) Homework from book Includes registration to access Web materials

Course Structure Recommended background –CS2303 or CS2301CS2303CS2301 –(Systems programming) In-Class –Lecture –Discussion –Exams Out-of-Class –Reading –Projects –Labs –Homework Grading –Exams (40%) –Projects (20%) –Homework (20%) –Labs (20%) –Only 1 day late allowed! (More on Exams, Labs, Homework and Projects, next)

Exams 2 exams –mid-term and final 40% of grade Non-cumulative Closed –closed-note, closed-paper, closed-friend Sample your knowledge of class material 2-hour time slot, so hopefully not time- pressured

Homework Written questions (and answers) pertaining to class material Verify that you truly understand lecture material –And can apply it! Designed to get you ready for exams 4 total –2 before mid-term, 2 before final 20% of your grade

Labs Designed to let you learn by “seeing” actual network data Capture data with “sniffer” and analyze 4 labs Note, exact dates on timeline most likely to change –Depends upon when course material –20% of your grade (More on lab 1 shortly)

Projects Programming part of the course 2 significant projects –One before mid-term, one after Using sockets Done individually Can be done in either C++ or Java Must run on CCC machines! –(Linux) 20% of your grade

Outline Background(done) Course Materials(done) Topics(next) Motivation

Topics Network protocols Internet traffic Local area networks Wide area networks Switches and routing Congestion Physical layer issues Wireless networks Security

Why Computer Networks? The Network is the Computer Most applications today are connected –Games, Social Networking, Streaming Video … Many devices are connected –PCs, Game consoles, Set-top boxes, Mobile devices… Tools to hook up, but how and why not so clear In order to design and build the next generation of devices and applications, you must have at least a basic understanding of computer networks Many should take more networks!

Why This Class? No longer 1 course (cs4514), but two (cs3516, cs4516) –Lots of material in Networks! This course  learn computer networking concepts in a broad way –Less programming –Still hands-on CS4516 is Advanced Computer Networks –In-depth, more programming –Most should take that, too!

CS 3516 Computer Networks Mark Claypool